I am right there with you. I have a white that looks like she has swallowed a whale that is due any minute - she has only ever had twins for me in the past but she is much bigger this time around (I am hoping that she just had the munchies for the past 111 days). I am not looking forward to any litter bigger than two!
Also, my pure standard RGSC is getting huge and lethargic, not sure when the mating took place as no evidence but she is huge and doesn't look comfortable at all. I am on pins and needles and holding my breath (and checking the chin room 6 or 7 times a day) hoping that there are no complications!!!